Gas-main stopper



May 26, 1925. 1,539,730 I P. GOODMAN GAS MAIN STOPPER i d so, 1924 INVENTOR Pa Zriclf Goodman 4 1 ATTORNEYS WITNESSES Patented May 26, 1925.

UNITED STATES 1,539,730 PATENT OFFICE.

ra raloxfooomualv, or BROOKLYN, rinwfvo'aie GAS-MAIN s'rorrna.

Application filed August 30, 1924. Serial No. 735,196. i

To all 107mm it may concern: I

Be it known that I, PATRICK GOODMAN, a citizen of the United States of America, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Gas-Main Stopper, of which the following is a description.

The present invention is an improvement on the gas-main stoppers forming the subject matter of United States Patent- Number 9 10,- 1438, granted to me November 16, 1909, and of Patent Number 960,086, granted to me May 31, 1910. In said patents the assemblage comprises a collapsible frame having a diaphragm which is adapted to be passed through an opening in the side of the gasmain and then expanded in the main to out off the flow of gas, said frame having handle bars to extend through the opening to the exterior and having means arranged to force the handle bars in opposite directions to lock the stopper in place.

The present invention more particularly relates to means for forcing the diaphragm and its frame in opposite directions to lock the stopper in place and forming a complete closure of the gas main.

Reference is to be had to the accon'ipanylug drawings forming a part of this specification, it being understood that the drawings are merely illustrative of one example of the invention.

Figure 1 is a side view of a gas-main stopper embodying my improvements, the stopper being shown locked in position in the main, and the main in longitudinal central vertical section Figure 2 is a vertical section substantially on the line 22 of Figure 1:

Figure 3 is an inner face view of the stopper when collapsed, showing the handle-bars in section.

Figure 4 is an enlarged view in vertical section of the sleeve applied to one handle bar. the latter shown in side elevation.

The stopper proper in which the present improvements are embodied has the same general assemblage as the stoppers in my aforenamed patents. Said stopper embodies generally in its construction a collapsible spring frame 10 covered by a yielding packing and having a flexible diaphragm 11, which is stretched across the frame in circular form by exerting pressure on the threaded shank extending through the handgrip 115 and provided with a tightening nut 17 and a set nut 18. The hooked end 19 of the hook 16 is adapted to engage beneath an oblique overhanging lug 20 on a sleeve 21 fitted on the handle-bar 14:. Depending from the sleeve 21 is a bracket 23 having a foot 24, at thelower end adapted to engage the gas-main at the opening formed therein for the insertion of the stopper.

Vith the described arrangement, when the sleeve 21 is positioned on the handle-bar 1 1 with the foot 24 engaging the gasanain at the edge of the opening, the hook 19 is engaged beneath the lug 20. It is to be observed that said lug 20is at the front of the sleeve 21 and the sleeve is so disposed as to position the said lug at the front of the handle-bar 14. The said disposition of the lug allows complete clearance for the movement of the handle-bar 13 relatively to the handle-bar 14 for exerting a force against the frame 10 at the top to jamb the frame gastight in-the main. In addition, the provi sion of the lug 20 at the front of sleeve 21 and handle-bar 14: more effectively applies the force developed by turning the nut 1.7 forwardly on the hook 16 and it furthermore promotes convenience in the n'lanipulation of the several elements.

I would state in conclusion that ivhile the illustrated example constitutes a, practical embodiment of my invention, I do not limit myself strictly to the exact details herein illustrated, since, manifestly, the same can be considerably varied without departure from the spirit of the invention as defined in the appended claims.

Having thus described my invention, I claim:

1. A gas-main stopper having handle-bars pivot-ally connected at substantially diametrically opposite points on said stopper, a sleeve adjustable along one of the handlebars and provided with means to engage a gas-main at an opening therein, means to eX- ert pressure on the other handlebar to lock rthe stopper in the main, and IIIBHILS at the pivotelly connected thereto a hook havlng threaded shank adj ustably enga ing one of said handle-bars, a sleeve on t e other of said handle-bars, said sleeve having a footlntegral therewlth to engage a gas-main at an opening therein, said sleeve furthermore I having a. g at the front thereof to be engaged by said hook.

PATRICK GOODMAN. 

